Possible Clues:

• 'Believe it __!'
• "... but I could be wrong"
• 'Ready ___ ...'
• '... but I could be wrong'
• 'Ready __ ...'
• ''Ready __, here I come!''
• 'Ready ___...'
• "... but maybe I'm wrong"
• 'Believe it --!'
• Ripley's last words?